The Anti-aging vaccine is a powerful drug that was available to Earth citizens in an alternate future timeline, as well as a cure for a pandemic on the Aschen world of Volia several years before. In both cases, the vaccine intentionally causes an enormous amount of the population to become sterile in order to rapidly decrease the birthrate on a world within the Aschen Confederation. Almost a decade after the introduction of the drug about 91% of the population is unable to procreate. (SG1: " 2010")